In reply to Gavin:
I suspect that the Climbing Frog ones are the same as the Le Pirate ones. I couldn't find Climbing Frog in stock anywhere, so I got the Le Pirate ones and they do the job. One thing I would say is that they are probably more useful outdoors on longer routes. On an indoor wall, you don't see the whole climber through the glasses until they are near the top of the wall. At least when your partner is 6'3" like mine is.